You should be looking for realtekhighdefinitionaudio64bitwin7win8win81win10r279exe if you answer "yes" to any of these:

This driver package was designed for universal compatibility across several generations of the Windows operating system: (64-bit) Windows 8 (64-bit) Windows 8.1 (64-bit) Windows 10 (64-bit) 🛠 Purpose and Features

Installing this file is straightforward, but due to the nature of audio drivers, a clean installation is best. Follow these steps precisely:

Windows Vista, 7, 8, 8.1, and 10 (64-bit strictly recommended). Supported Codecs: